Title (en)

Carrier for electrophotography, two-component type developer for developing electrostatic images, process for producing carrier for electrophotography, and image forming method.

Title (de)

Trägerteilchen für Elektrophotographie, Entwickler vom Zeitkomponententyp zur Entwicklung elektrostatischer Bilder, Verfahren zur Herstellung von Trägerteilchen für Elektrophotographie und Bildherstellungsverfahren.

Title (fr)

Véhiculeur pour électrophotographie, développeur du type à deux composants pour le développement d'images électrostatiques, procédé de fabrication de véhiculeurs pour électrophotographie, et procédé de formation d'images.

Publication

EP 0426124 A2 19910508 (EN)

Application

EP 90120824 A 19901030

Priority

• JP 11945990 A 19900508
• JP 11946090 A 19900508
• JP 28590189 A 19891031

Abstract (en)

1. A carrier for electrophotography comprises carrier core particles and a coating resin material. The surfaces of the carrier core particles are each coated with the coating resin material and the coating resin material comprises a resin and a quaternary ammonium salt represented by the following formula: <CHEM> wherein R1, R2, R3 and R4 each represent an alkyl group, an aryl group or an aralkyl group and R1, R2, R3 and R4 may be the same or different from each other; and A represents an organic anion, an isopolyacid ion or a heteropolyacid ion.

IPC 1-7

G03G 9/113

IPC 8 full level

G03G 9/097 (2006.01); G03G 9/113 (2006.01); G03G 15/08 (2006.01)

CPC (source: EP US)

G03G 9/1138 (2013.01 - EP US); Y10T 428/2998 (2015.01 - EP US)

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 0426124 A2 19910508; EP 0426124 A3 19910522; EP 0426124 B1 19970102; DE 69029559 D1 19970213; DE 69029559 T2 19970522; JP 2925294 B2 19990728; JP H0473663 A 19920309; US 5215848 A 19930601

DOCDB simple family (application)

EP 90120824 A 19901030; DE 69029559 T 19901030; JP 29432690 A 19901030; US 60703590 A 19901031